论《四库总目》文学批评的经世价值取向

明末清初 ,宋明理学已经发展到极端 ,于是清初文人倡导儒家传统的经世致用思想以救理学空疏浮泛之弊 ,经世思想成为一时社会思潮的主流。《四库全书总目》的文学批评无论是功用价值论、创作主客体论还是艺术风格论都由此而带上浓郁的经世色彩     

时调与中国六句体诗的形式比较

时调是韩国古代代表性的母语短诗,过去学术界也曾经注意比较过时调与绝句的形式,但更注重比较时调与韩国本土母语诗歌的形式。不过事实证明,在形式上与时调最近的是中国古代六句体诗(三韵)。这种形式的相似性在理论上提出了这样的可能性:时调的形成过程之中接受了六句体诗的形式因素。     

广州伊斯兰古迹二题

本文通过文献记载的新发现,将怀圣寺光塔存在的时间提前到北宋年间,并推断明人文献记载中的"金天教法"似与光塔塔顶之上的金鸡有关.     

Nonparametric control charts based on runs and Wilcoxon-type rank-sum statistics

In this article, we introduce three new distribution-free Shewhart-type control charts that exploit run and Wilcoxon-type rank-sum statistics to detect possible shifts of a monitored process. Exact formulae for the alarm rate, the run length distribution, and the average run length (ARL) are all derived. A key advantage of these charts is that, due to their nonparametric nature, the false alarm rate (FAR) and in-control run length distribution is the same for all continuous process distributions. Tables are provided for the implementation of the charts for some typical FAR values. Furthermore, a numerical study carried out reveals that the new charts are quite flexible and efficient in detecting shifts to Lehmann-type out-of-control situations.     

河姆渡文化"耜耕农业"说质疑

骨耜的真正用途是认定河姆渡文化稻作农业发展阶段的关键,考古发掘新证据说明骨耜用来深掘灰坑和柱洞,它与干栏式建筑密不可分。生物学分析表明栽培稻是野生稻的一个亚种,栽培稻内的籼稻和粳稻之分不是亚种间的差别,而是气候生态型的差异;出现籼、粳和普通野稻组合是原始栽培稻的体现。前人夸大了河姆渡文化的稻谷数量,缺乏收割和加工谷物工具也是稻谷作为食物所占比例较小的反映。稻作不是河姆渡文化主要经济形态,定居的前提不一定以农业为主。这些观点动摇了河姆渡文化“耜耕农业”发展阶段说。     

A note on Läuter-type robust design for polynomial regression models

In this paper, we consider the problem of model robust design for simultaneous parameter estimation among a class of polynomial regression models with degree up to k. A generalized D-optimality criterion, the Ψ_α‐optimality criterion, first introduced by Läuter (1974) is considered for this problem. By applying the theory of canonical moments and the technique of maximin principle, we derive a model robust optimal design in the sense of having highest minimum Ψ_α‐efficiency. Numerical comparison indicates that the proposed design has remarkable performance for parameter estimation in all of the considered rival models.     

A test statistic for weighted runs

A new test statistic based on runs of weighted deviations is introduced. Its use for observations sampled from independent normal distributions is worked out in detail. It supplements the classic χ² test which ignores the ordering of observations and provides additional sensitivity to local deviations from expectations. The exact distribution of the statistic in the non-parametric case is derived and an algorithm to compute p-values is presented. The computational complexity of the algorithm is derived employing a novel identity for integer partitions.     

Addition of runs to an s-level supersaturated design

The purpose of the present work is to extend the work of Gupta et al. (2010) to s  -level column balanced supersaturated designs. Addition of runs to an existing E(χ²)-optimal$E({\chi }^2)\mathrm{-}\mathrm{optimal}$ supersaturated design and to study the optimality of the resulting design is an important issue. This paper considers the study of the optimality of the resulting design. A lower bound to E(χ²)$E({\chi }^2)$ has been obtained for the extended supersaturated designs. Some examples and a small catalogue of E(χ²)-optimal$E({\chi }^2)\mathrm{-}\mathrm{optimal}$ supersaturated designs are also presented.     

Defining equations for two-level factorial designs

Defining equations are introduced in the context of two-level factorial designs and they are shown to provide a concise specification of both regular and nonregular designs. The equations are used to find orthogonal arrays of high strength and some optimal designs. The latter optimal designs are formed in a new way by augmenting notional orthogonal arrays which are allowed to have some runs with a negative number of replicates before augmentation. Defining equations are also shown to be useful when the factorial design is blocked.